Install a genuine OKI Image Drum for top performance from your printer when you notice declining print quality. As you use your OKI laser printer, waste toner and wear and tear on parts can lead to reduced quality and poor output. Installing a replacement imaging unit helps to renew your printer's mechanisms, leading to crisp blacks and vibrant colours. OKI printers use a separate image drum and toner cartridge, which helps to keep costs down and save money per page. This Magenta drum is designed to deliver up to 30,000 pages from MC760/MC770/MC780 laser printers.